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Date: Thu, 18 Apr 2013 10:31:33 +0530
From: Huzaifa Sidhpurwala <>
Subject: Xorg-x11-server: Information disclosure due enabling events from
 hot-plug devices despite input from the device being momentarily disabled

Hi All,

David Airlie and Peter Hutterer of Red Hat found an information
disclosure flaw was found in the way X11 server used to register
new hot-plug devices, when X11 server was instructed (for that
particular moment) not to receive input devices events. Formerly when
registering new input device, X11 server simultaneously enabled
retrieval of input from the particular device (regardless of the
A local unsuspecting user, relying on the X11 server disable
input feature it to properly prohibit acquiring of events from this
newly added hot-plug device, could supply a sensitive information that,
due the above bug, would become available to the physically proximate

Upstream patch:

Red Hat Bugzilla:

This issue has been assigned CVE-2013-1940

Huzaifa Sidhpurwala / Red Hat Security Response Team

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